BuildRules/Ottawa/Windows / doors

Ottawa project guide

Do you need a permit for window or door changes in Ottawa?

Check Ottawa permit rules for new windows, enlarged windows and relocated window or door openings.

1 min readReviewed Oct 1, 2026

The short answerConditional

Ottawa lists new windows, enlarged windows and relocated window or door openings as building-permit work.

The permit trigger is tied to altering the opening and structure, not merely changing finishes or hardware.

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Know what matters

What changes the answer.

Start with these conditions. The official reference is attached to each one.

New windowPermit requiredConditional

Ottawa lists new windows where there were none before among permit-required projects.

Official sourceCity of OttawaBuilding permit projects · Window, door, plumbing and foundation repair permit triggers

Verified2026-10-01Open proof

Enlarged openingPermit requiredConditional

Enlarging a window or door opening is listed as permit-required.

Official sourceCity of OttawaBuilding permit projects · Window, door, plumbing and foundation repair permit triggers

Verified2026-10-01Open proof

Relocated openingPermit requiredConditional

Relocating a window or door is listed as permit-required structural alteration work.

Official sourceCity of OttawaBuilding permit projects · Window, door, plumbing and foundation repair permit triggers

Verified2026-10-01Open proof

Your preparation checklist

Your preparation progress

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Existing and proposed opening plan
Exterior elevation
Structural/lintel information
Building permit application and supporting drawings

Open the focused permit checklist

Fees and timing

TimelineConfirm the current municipal review stream after a complete application is submitted.

FeesConfirm the current Ottawa permit fee for the exact scope before filing.

Next steps

Measure existing and proposed openings
Identify framing affected by the change
Prepare scaled drawings
Submit before structural opening work starts

Same project, different city

See how this rule changes across Ontario.

Compare the source-reviewed answer for this project across every municipality BuildRules currently covers.

Compare windows / doors rules by city

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Send this to your designer or contractor before agreeing on the scope.

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Turn the published rules, documents, timing and questions to verify into one project-specific preparation brief.

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Research guidance only. Municipal approval and professional design are separate.

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Tell us what kind of help you need. We’ll save the request with your project and municipality so a relevant provider can respond if a match is available.

BuildRules principle

Do not confuse “no permit” with “no rules.”

Zoning, overlays, safety rules and other constraints can still apply.

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